Roof drain



Feb. 23, 1943. VA. J. FILKINS 2,311,654

ROOF DRAIN FileaJuly 29, 1940 &@

- faf" 1 BY ATTORNEY.

Patented Feb. 23, 1943 ROOF DRAIN Arthur J. Filkins, Chicago, 111.,assignor to Paul Dickinson, 1110., Chicag Illinois 0, 111., acorporation of Application July 29, 1940, Serial No. 348,125

Claims.

This invention relates in general to a drain outlet and discharge for aflat or plain surface, and is more particularly described as a drain andoutlet for a roof.

An important object of the invention is in the provision of arectangular drain and improved means for attaching it to an outlet ordrain pipe- A further object of the invention is in the provision of araised drain outlet having a gravel stop and a roof insert thereforhaving an internal gravel stop and reservoir.

A still further object of the invention is in the provision of a domedroof drain having a pipe inlet together with gravel stoppin means andpipe discharge therefor.

Other and further objects of the invention will appear in thespecification and will be apparent from the accompanying drawing inwhich:

Fig. 1 is a partial view of the top and also of the drain fitting belowit;

Fig. 2 is a view partly in section of the drain shown in Fig. 1 asapplied to a roof; and

Fig. 3 is a detail sectional view showing a modification of the drainpipe connection.

In a roof drain, it is desirable to provide gravel stop means whichprevents gravel and other debris from clogging the holes of the drain,and also to provide additional means for arresting any gravel or othermaterial which may pass through the holes of the drain before it reachesthe drain pipe. It is also desirable to provide a roof drain which iseasily and quickly removable for cleaning out the inside gravel stop,but which may be held tightly in place to make a Water-proof joint. Itis sometimes desired to insert another down spout or pipe connectioninto a roof drain which will not interfere with the removal of theprojecting Or domed outlet, but at the same time will insure properconnection of the inlet pipe when the dome is replaced.

Referring now more particularly to the drawing, this roof draincomprises a roof member 6 set into and suitably supported by a roofstructure, and an upper or dome member I placed upon the flange andextending upwardly over the roof member 8.

The roof member has an upper outwardly extending flange 8 by means ofwhich it is supported in a roof opening upon the roof 9 and rafters I 0to which it may be secured in any suitable manner as by fastening boltsl l.

A separate clamping flange [2 corresponds to the flange 8 of the roofmember and the edge of a water-proof layer or cover l3 such as felt orsheet roofing extends between the two flanges and is clamped betweenthem by fastening studs or bolts [9 to provide a Water-proof joint.Another layer M of insulating or roof covering material may beinterposed between the roof deck 9 and the covering l3 which is notextended between the flanges but terminates at the outer edge of theflange 8.

Extending upwardly about and integral with the marginal edge of theupper flange I2 is a gravel stop i5 having angular notches H3 atintervals extending to the upper edge of the flange I 2 and adapted toengage particles of dirt or gravel ll which may be used to coat orprotect the water-proof covering l3.

The drain members are substantially rectangular or square in their outerdimensions and the upwardly extending dome is preferably angular With aplurality of slots I8 of different sizes extending from top to bottom inthe different angular surfaces thereof. By providing a dome extendingabove the ordinary roof level, an increased outlet isprovided as theWater rises above the lower level, even though the lower drain openingsare clogged by an accumulation of dirt or debris.

In order to hold the dome tightly in place, the upper portion of thedome member is formed at the lower edges of some of the slots oropenings [8 with abutments 20 inclined slightly outward and terminateabove the lower edge of the dome. The corresponding inner surface of theroof member 6 is provided with lugs 2| each having a slot 22 whichregisters with one of the openings I8. Threaded bolts 23 having heads 24are each adapted to be engaged in the slot of a lug with the head at theunder side of the lug or projection, and the threaded end extending,through the corresponding slot of the dome member. A winged nut 25 orsome other suitable fastening device engages the outer threaded end ofthe bolt which rojects above the dome and also engages the upper surfaceof the abutment 20.

At the lower edge of the dome is a short outwardly extending flange 31which rests upon the clamping ring l2 inside of the rim attaching means19 so that the dome may be removed for access to the interior of theroof member 6 without disturbing the water-proof clamping engagementwith the roof covering I3.

At one side of the dome is a hollow extension 26 communicating with theinterior of the dome member and projecting beyond or through the gravelrim I5 with an opening 21 therein for seating the end of a pipe 28 whichmay be of any shape conforming to the opening in the projection. Thismay be the discharge end of a down spout or any other pipe whichdischarges into the drain.

In attaching the dome member, the Winged nuts are threaded tightly inplace and the pipe 28 may be inserted therein and fixed in any desiredmanner. In order to remove the dome member for cleaning or repairing thedrain, the winged nuts are removed and the dome may be slipped out ofengagement with the end of the pipe without materially disturbing itsposition. If this pipe 28 is movable with the dome member, it may bethreaded into the opening.

At its lower end, the roof member has an upwardly turned rim or flange30 which forms a surrounding gravel pocket 3| into which any gravel orother dirt flowing in through the dome will be caught and retained inthe pocket 3|. The inner opening 32 is preferably circular to receivethe circular end .of a down pipe :33 and this pipe may have a threadedend engaging a corresponding threaded portion 34 of the roof member asshown in Fig. 2 .or the lower end of the roof member may be formed withan inwardly projecting rim 35 which forms a packing gland with the upperend 36 of a pipe so that a packing such as oakum 31 and lead 38 may beinserted in the gland sealing the joint in a well known manner.

With this construction, a rectangular drain is applied to a roof but isadapted to receive a circular or other pipe inlet and to discharge intoa circular or other pipe outlet; the roof member is protected from theaccumulation of gravel or other dirt :at its lower-most openings by theupper and outer gravel stop and the passage of gravel or other foreignmaterial to clog the inside of the drain is prevented :by theinsideravel stop or pocket at the top of the drain pipe. Provision is made foreasily and quickly removing the roof or dome member so that access maybe had to the inner gravel .stop for removing dirt therefrom.

I claim:

1. A roof drain comprising a roof .member to extend through 'aroof withan :upper-flange to extend under the'edge'oi :a water-proofroofcovering, a ring flange to :overlie and clamp a roof covering between itand the other flange, an apertured dome removably seated on the upperflange, and a plurality of fastening bolts engaged at their inner endsat the inside of the roof member and extending through perforationsaround the dome at a distance above the lower edge, and fastening nutsat the upper ends of the bolts bearing against the dome to clamp ittightly on the ring flange.

2. In a roof drain according to claim 1, the member insertable through aroof being hollow and having inwardly projecting lugs, the dome coveringthe upper end of the hollow member having perforations around the sides,the fastening bolts having their heads engaging under the lugs andthreaded ends extending through dome openings near the top of the dome,and the fastening nuts removably engaging the threaded ends of the boltsand the outer surface of the dome at the sides of the openings.

3. In a roof drain according to claim -1, the member insertable througha roof being hollow and having pairs of spaced inwardly projecting lugs,the dome covering the upper open end of the member having openings atthe sides and downwardly inclined abutments at the lower ends of someopenings terminating above the lower edge of the dome, and the fasteningbolts having heads to engage the spaced lugs extending through the domeopenings, and the nuts at the upper ends of the bolts engaging theinclined abutments.

4. In a roof drain according to claim 1 having a separate roof coverclamping ring flange at the top of the roof member flange with anintegral outer gravel stop surrounding the dome and free from engagementtherewith so that the dome is removable without disturbing the ringflange, and means for separately attaching the clamping flange to theextending upper flange of the roof member.

5. A roof drain in accordance with claim 1 having an outside gravel stopat the top of the ring flange surrounding and separate from the loweredge :of the dome and extending above the lower edges of the lowermostdome repenings, and a gravel catcher forming a part of and extendingaround the inside of the member below the attachment :of the fasteningbolts therein.

' ARTHURJ.

